Socket receptacle



Patented Oct. 30, 1928.

UNITED STATES FRANK r. FOBSHEE, or

MANsrIELnoHIo, ASSIGNOR To wnsrmenoosn ELECTRIC a 'MANlZII"AGTUBING C OMIfANY, A CORPORATION OF PENNSYLVANIA.

SOCKET nnoEPTAo n;

Applieation filed September 9, 1927. Serial, No. 218,437.

My invention relates to contact devices and particularly to socket receptacles.

An objectof my invention is to provide'a relatively simple, compact, easily manufactured and assembled socket receptacle for an electric oven.

In practicing my invention, I provide a fiat refractory block having a plurality of openings extending longitudinally therethrough and a pair of shoulders at each side thereof, a metal bracket, of substantially U- shape secured to the block, a plurality of contact sockets located within the respective openings in the block and terminal studs in- 16 sulatedly mounted on the metal bracket for holding the socket in proper operative positions within the respective openings.

In the single sheet of drawings,

Figure 1, is a view, partially in side elevation and partially in section, of an oven with which is associated a device embodying my invention.

Fig. 2, is a view, in front elevation, of a socket receptacle embodying my invention,

Fig. 3, is a view, in front elevation thereof, with a part shown in section, and,

Fig. is a bottom plan view thereof.

An electric oven 11, is illustrated generally only in Fig. 1 of the drawing and embodies a p urality of walls 12 and a door 13.

A plurality of heating units 14 and 15 are located within the oven, the heating units each embodying a. suitable metal frame 16, a refractory brick 17 thereon and a resistor member located in grooves in the outer surface of the brick 17 and having the ends thereof connected to a plurality of contact pins 18 insulatedly supported by the frame 16 at the rear end thereof. Bracket members 19 are provided for locating and holding the heating units in proper operative positions at the bottom and at the top of the oven, these brackets being of substantially Z-shape.

A plurality of socket receptacles 21 are 45 mounted in the rear wall of the oven. Each socket receptacle comprises a substantially flat refractory block 22 having a reduced front portion 23 and a rear portion 24 providing shoulder portions 25 and 26 at each side of the block adjacent to the front and rear ends thereof. A plurality of spaced longitudinally extending openings 27 are rovided for receiving therein contact sockets 28. These contact sockets are of tubular shape, the front end thereof being slotted longitudinally as shown at 29 to provide a resilient tip for receiving the contact pins 18 of the heating units 14 and 15. The rear end of each of the contact sockets 28 is provided with a screw threaded opening for receiving a contact pin 31 which serves also as a terminal pin.

The plurality of terminal pins 31 extend through and are insulatedly supported by a metal bracket 32' of substantially U-shape, the end portions of which are bent outwardly and are located against the shoulder portions 26 'hereinbefore described. Washers 33 of mica are located at each side of the inter- -mediate portion, of the bracket .32, one of these washers being located in a depressed portion to center the same, a metal washer 34 and a nut35being provided on each of the studs 31 totightly hold them on the intermediate portion of the bracket 32. A plurality of metal washers 36 and an outer nut 37 are provided on each of the studs 31 to. permit of securelyconnecting thereto lead wires in a manner well known in the art.

A stop plate 38 is provided for each block 21, each plate being provided with a central opening therein, through which the portion 23 of the block may extend as shown more particularly in Fig. 3 of the drawing. Screw bolts 39 extend through suitable openings in thestop plate 38 in the side portions of the block 21 and through the end portions of the metal bracket 32 to secure the stop plate and the metal bracket in proper operative positions on the block. The length of the side portions of the bracket 32 is such that the intermediate portion thereof, is spaced apart from the rear end of the block 21 a short distance as shown more particularly in Fig. 3 of the drawings.

The device embodying my invention thus provides a relatively simple refractory block, which may be molded in One operation, all of the openings therethrough being located in one plane and extending in the same direction. The contact sockets, which must be made of a high grade metal because of the relatively high temperature to which they are subjected, are relatively short as are also the terminal and supporting stud members. The sockets and their supporting studs may be completely assembled on the metal bracket, after whi h this assembly can be secured in proper operative position relative to the re- 1 U-sh'ape,

of the socket receptacle easy.

Various modifications may be made in the device embodying my invention Without departing from the spirit thereof, and I desire that only such limitations shall be placed thereon as are imposed by the prior artor are set forth in the appended claims.

I claim as my invention: v

1. A socketreceptacle comprising a flat refractory block having a plurality of longitudinally-extending openings therethrough and lateral shoulder portions at both front and rear thereof, a metal member, of 'U-shape, having. its end portions fitting against one set of shoulders and having its intermediate portion located in the plane of the block and adjacent to the rear end thereof, and contact sockets insulatedly mounted on the intermediate portion of the metal member of U-shape and extending into the openings in the re fractory block.

2. A socket receptacle comprising a fiat refractory block having a plurality of spaced longitudinally-extending openings therethrough, a metal bracket, of substantially secured to the refractory block and having its intermediate portion spaced therefrom, and a plurality of contact sock-ts insulatedly supported by the bracket coaxially with the openings and extending therein-to.

3. A socket receptacle comprising a flat refractory block having a plurality of spaced longitudinally-extending openings therethrough, a metal bracket, of substantially U-shape, secured to the refractory block, a plurality of contact sockets located in the openings, and'a plurality of studs, 'insulatedly mounted on the bracket and extending into the sockets to hold them in their proper operative positions in the respective openings.

4. A socket receptacle comprising a flat refractory block having front and rear shoulder portions at each side thereof and having also a plurality of spaced openings extending longitudinally therethrough, a stop plate exone pair of said shoulder portions, a metal bracket, of substantially -U-sl1ape, having itsends engaging the other pair of shoulder portions, a bolt extending longitudinally and an end of the metal bracket for holding the stop plate and the metal bracket in proper operative positions relatively to the refractory block, contact socket-s located in the 'e tending late-rally of the block and engaging;

through the stop plate, the refractory block,

spective openings, and terminal studs'insula-tedly supported by the metal bracket for holding the contact sockets in said openings.

In testimony whereof, I have hereunto subscribed my name this 31st day of Aug, 1927.

FRANK FORSHEE. 

